Agent skill

Build Helper

by nhiroyasu in nhiroyasu/wallpaper-play

Build and test helper for wallpaper-play. An agent skill from nhiroyasu/wallpaper-play.

MITAuto-check passedMobile

Install Build Helper

skills CLI
$ npx skills add nhiroyasu/wallpaper-play --skill build-helper -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install nhiroyasu/wallpaper-play build-helper --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/nhiroyasu/wallpaper-play.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/build-helper .claude/skills/build-helper && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
build-helper
GitHub stars
148
Token cost
~143 tokens
SKILL.md length
10 words
Files
1
Skills in repo
1
Repo updated
First seen
Licence
MIT

At a glance

Build and test helper for wallpaper-play. An agent skill from nhiroyasu/wallpaper-play.

  • Codex needs to run local macOS app build
  • SKILL.md covers 前提, Build を実行する and Test を実行する
  • Calls xcodebuild
  • XCTest from terminal with xcodebuild and format logs via xcbeautify

What it does

Build Helper is an agent skill from nhiroyasu/wallpaper-play. Build and test helper for wallpaper-play. Use when Codex needs to run local macOS app build or XCTest from terminal with xcodebuild and format logs via xcbeautify.

Its SKILL.md is about 140 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile. It works with Xcode, macOS and YouTube. The repository describes itself as: The wallpaper engine for macOS. The licence is MIT.

When your agent uses it

  • Codex needs to run local macOS app build
  • XCTest from terminal with xcodebuild and format logs via xcbeautify

Example prompts

  • “/build-helper”

What it can do on your machine

Read from SKILL.md and the folder at commit 775ce7a. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • xcodebuild

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Build Helper loads about 143 tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 10 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~44
When it runs · the whole SKILL.md, loaded when a task matches
~143

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nhiroyasu/wallpaper-play at commit 775ce7a, republished under its MIT licence (© nhiroyasu). 10 words, ~143 tokens.

Download SKILL.mdSave it as .claude/skills/build-helper/SKILL.md (or your agent's skills folder).
name
build-helper
description
Build and test helper for wallpaper-play. Use when Codex needs to run local macOS app build or XCTest from terminal with xcodebuild and format logs via xcbeautify.

Build Helper

wallpaper-play のビルドとテストをターミナルから実行する。

前提

  • リポジトリルート(wallpaper-play)で実行する。

Build を実行する

sh
xcodebuild -project wallpaper-play.xcodeproj -scheme 'Wallpaper Play' -derivedDataPath .build/DerivedData

Test を実行する

sh
xcodebuild test -project wallpaper-play.xcodeproj -scheme 'Wallpaper Play' -derivedDataPath .build/DerivedData

© nhiroyasu, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/build-helper of nhiroyasu/wallpaper-play.

Open the folder on GitHubat commit 775ce7a

Compare with similar skills

Build Helper next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Build Helper compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Build Helper this skillnhiroyasu/wallpaper-play148—~143Automated safety check: PassMIT
macOS Spm App PackagingDimillian/Skills4k5 repos~1.2kAutomated safety check: PassMIT
Orca iOS Simulator Controlstablyai/orca89k1 repos~584Automated safety check: PassApache-2.0
Apple Crash Log .NET Symbolicationdotnet/skills5.6k1 repos~2.4kAutomated safety check: PassMIT
App Store Preflight Skillstruongduy2611/app-store-preflight-skills1.4k—~1.4kAutomated safety check: PassMIT
Build And Run Screendropfayazara/Screendrop2.2k—~1.1kAutomated safety check: PassCC0-1.0

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Categories

Questions about Build Helper

What does Build Helper do?

Build and test helper for wallpaper-play. An agent skill from nhiroyasu/wallpaper-play. Build Helper is an agent skill from nhiroyasu/wallpaper-play. Build and test helper for wallpaper-play.

When should I use Build Helper?

Build Helper fits situations like: Codex needs to run local macOS app build; XCTest from terminal with xcodebuild and format logs via xcbeautify.

How do I install Build Helper in Claude Code?

Run `npx skills add nhiroyasu/wallpaper-play --skill build-helper -a claude-code`. Or copy the skill folder (.agents/skills/build-helper in nhiroyasu/wallpaper-play) into .claude/skills/build-helper in your project. Claude Code loads it when a task matches its description.

How do I install Build Helper in Codex?

Run `npx skills add nhiroyasu/wallpaper-play --skill build-helper -a codex`. Or copy the skill folder (.agents/skills/build-helper in nhiroyasu/wallpaper-play) into .agents/skills/build-helper in your project. Codex loads it when a task matches its description.

Can I use Build Helper in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nhiroyasu/wallpaper-play --skill build-helper -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/build-helper, .gemini/skills/build-helper, .github/skills/build-helper and .opencode/skills/build-helper in your project.

What does Build Helper need to run?

Going by SKILL.md and its folder, Build Helper needs the command-line tools its instructions call (xcodebuild).

Does Build Helper access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Build Helper safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Build Helper use?

Build Helper is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Build Helper use?

About 143 tokens (SKILL.md is roughly 572 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Build Helper?

Skills that share tags, products or a category with Build Helper: macOS Spm App Packaging (Dimillian/Skills, 4k stars), Orca iOS Simulator Control (stablyai/orca, 89k stars), Apple Crash Log .NET Symbolication (dotnet/skills, 5.6k stars) and App Store Preflight Skills (truongduy2611/app-store-preflight-skills, 1.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Build Helper?

nhiroyasu (a GitHub user) maintains it in nhiroyasu/wallpaper-play, which has 148 GitHub stars. The repository was last updated on May 26, 2026.

Source: nhiroyasu/wallpaper-play on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.